Anion-specific partitioning in two-phase finite volume systems: possible implications for mechanisms of ion pumps

M Boström; E R A Lima; E C Biscaia; F W Tavares; P Lo Nostro; D F Parsons; V Deniz; B W Ninham

doi:10.1021/jp809051j

Anion-specific partitioning in two-phase finite volume systems: possible implications for mechanisms of ion pumps

J Phys Chem B. 2009 Jun 11;113(23):8124-7. doi: 10.1021/jp809051j.

Authors

M Boström¹, E R A Lima, E C Biscaia, F W Tavares, P Lo Nostro, D F Parsons, V Deniz, B W Ninham

Affiliation

¹ Department of Physics, Linkoping University, SE-581 83 Linkoping, Sweden.

PMID: 19441847
DOI: 10.1021/jp809051j

Abstract

In two-phase finite volume systems of electroneutral phospholipids, the electrolyte concentration is different in the two phases. The partitioning is highly anion-specific, a phenomenon not accounted for by classical electrolyte theories. It is explained if ionic dispersion forces that lead to specific ion binding are taken into account. The mechanism provides a contribution to active ion pumps not previously considered.

Publication types

Research Support, Non-U.S. Gov't

MeSH terms

Anions*
Models, Theoretical
Phospholipids / chemistry

Substances

Anions
Phospholipids